Roofing-washer and screw.



s. WILLIAMS. ROOFING WASHER AND SCREW. APPLICATION FILED IAN. H. 1918.

1,286,862. Patented Dec.3,1918.

Inflow/ 0k M 5. Williams 19 Jim WM y UN TED s ra'rus PAT a MONTAGU SYDNEY WILLIAMS, MARRICKVILLE, NEAR SYDNEY, NEW SOUTH WALES, AUSTRALIA, ASSIGNOR OF ONEnHALF TO THOMAS'BOBERT KIRKLAND, OF mm RICKVILLE; NEW SOUTH WALES, AUSTRALIA. I a i it noormawnsnna AND scnnw,

Y Britain, residing at No. l VVarren road,

Marrickville, near Sydney, in the State of 1 New South Wales and Commonwealth of,

Australia, plumber, have invented a new and useful Improve '='Roofing-Washer and Screw, of which the f0 lowing is a specification.

There has always been difliculty in making water tight the fastening's (generally a screw). of sheets (generally corrugated iron sheets) of roofing to the purlins and the devices hitherto usedhave been more or-less unsatisfactory and as the material namely lead of which washers and heads around screws and nails have been'made has become costly an eflicient substitute for such devices isverynecessary. Q And this invention refers to an easily made, cheap and effective substitute for the present day-washers and heads for screws and nails used for the fastening down vof sheets of metal roofing on their support and it relates to a metal washer of peculiar con-1 struction which together with the pressure of the sCI'eW'Or nail thereon will makea *Jomt around the stem ofthe screw or nail.

The ridgesfi as well as strengthening the water tight and rain proof joint.

This improved roofing washer which may be separa'te'from or be associated with the stemofa screw or of a nail consists of a I plate or I to'secure by Letters Patent is:

stamped out or otherwise formed sheet metal washer bent in' conformity with the shape of the sheet or plate on which-it'is to rest having an orifice therethrough for the fastening screw or nail and having a collar or neck or throat with a flat upper face around said orifice obtruding above the shaped washer wall and this wall may have a plurality of-ridges to strengthen it and which at the same time divide any more or less streams of water from the screw or nail head. 4 n i r The drawings accompanying and forming part of this complete specification illustrate the now best known. utilization and proved roofing washer and of this there mav be innumerable varieties as to shape, bend,

v Specification of Letters Patent.

' upper face.

' v ridgingj andmaterial all within the scope of this invention and the ambit of the claims to be, hereinafter set forth inrespect thereof.

sectional elevationson'lines 3-1-3 and 44 respectively in Fig. 2.

The washer is stamped "or otherwise shaped from sheet metal 'and'is'of suitable curvature or bend or contourfor its ultimate purpose and as shownhas a eon-vexo-concave 1 body 5 of oval shape with cross ridges 6 leading from the central orifice .7 around which is the collar or neck or throat 8 with a fiat In use thew-asher is placed over the hole in the ridge of the corrugated iron sheet 9 with its orifices? in juxtaposition therewith and then the screw 10 (or it may .be aheaded nail) is inserted as ordinarily and the under face 11 of said screw or nailp'ressing upon the flat upper face of the collar or. throat 8 tightens said washer on the sheet 10 and holds this firmly in place and at the same time makes a water tight and rain-proof a screw adapted to be passed through said neck andprovided with a head to engage the flat face of the neck. v

In testimony whereof I have signed. my

name to this specification in the presence of twosubscribing witnesses.

MONTAGU SYDNEY WILLIAMS.

Witnesses PERCY NEWELL, I. EASTON.

Patented Dec. 3,1918. Application file d J'anuary 17, 1918.- Serial Np. 212,328.

' Figure 1 shows twoof these improved I 

